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3 years ago

15

In a survey 4/12 of the students chose friday as their favorite day of the week and 5/12 chose saturday. What fraction of the st

udents surveyed chose friday or saturday?

1 answer:

Tcecarenko [31]3 years ago

4 0

9/12 chose Friday or Saturday. That reduces to 3/4. Which is also 75%. Hope that helps.

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Answer:

Step-by-step explanation:

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2 years ago

What’s the answer to x

grigory [225]

Answer:

x = 55

Step-by-step explanation:

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3 years ago

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Answer:

5 and -6.

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3 years ago

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jolli1 [7]

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3 0

3 years ago

To measure the height of a tree, a surveyor walked a short distance from the tree and found the angle of elevation was 43.9°, th

padilas [110]

Answer:

The height of the tree is H = 77.06 m

Step-by-step explanation:

From Δ ABC

AB = height of the tree

$\tan 43.9 = \frac{AB}{BC}$

$\tan 43.9 = \frac{h}{x}$

h = 0.9623 x ------- (1)

From Δ ABD

$\tan 37.6 = \frac{h}{20+ x}$

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Equating Equation 1 & 2 we get

0.9623 x = 0.77 (x + 20)

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x (0.1923) = 15.4

x = 80.08 m

Thus the height of the tree is given by

H = 0.9623 x

H = 0.9623 × 80.08

H = 77.06 m

Therefore the height of the tree is H = 77.06 m

4 0

3 years ago